Downlink Control Information Transmission Method and Receiving Method, and Related Device

1. A method for transmitting Downlink Control Information (DCI), applied to a base station, comprising: determining an Aggregation Level (AL) of to-be-transmitted DCI, based on a corresponding relationship between a DCI AL and a DCI payload size, and/or, determining the number of blind detections of the to-be-transmitted DCI based on a corresponding relationship between the number of blind detections corresponding to the DCI AL and the DCI payload size; configuring the to-be-transmitted DCI based on the AL and/or the number of blind detections of the to-be-transmitted DCI; and, transmitting the to-be-transmitted DCI to a mobile communication terminal; wherein the method further comprises: transmitting a Control Resource Set (CORESET) to the mobile communication terminal; wherein the CORESET is used to determine possible payload size of the to-be-transmitted DCI, and determine an AL and/or the number of blind detections corresponding to the possible payload size.

2. The method according to claim 1 , wherein the CORESET is transmitted through high-level signaling.

3. The method according to claim 1 , wherein in the corresponding relationship, a first number is less than a second number; the first number is a sum of number of search space corresponding to all the ALs of a greater one between a first payload size and a second payload size; and the second number is a sum of number of search space corresponding to all the ALs of a smaller one between the first payload size and the second payload size.

4. The method according to claim 3 , wherein in the corresponding relationship, the same AL corresponds to the same number of Candidates, a first AL is greater than a second AL; the first AL is the maximum AL among all the ALs corresponding to the greater one between the first payload size and the second payload size; and the second AL is the maximum AL among all the ALs corresponding to the smaller one between the first payload size and the second payload size.

5. The method according to claim 4 , wherein in the corresponding relationship, a third AL is greater than a fourth AL; the third AL is the minimum AL among all the ALs corresponding to the greater one between the first payload size and the second payload size, and the fourth AL is the minimum AL among all the ALs corresponding to the smaller one between the first payload size and the second payload size.

6. The method according to claim 3 , wherein in the corresponding relationship, corresponding to the same AL, the number of Candidates corresponding to the greater one between the first payload size and the second payload size is less than, or equal to the number of Candidates, which corresponds to the smaller one between the first payload size and the second payload size; and there is at least one AL, corresponding to the at least one AL, the number of Candidates corresponding to the greater one between the first payload size and the second payload size is less than the number of Candidates, which corresponds to the smaller one between the first payload size and the second payload size.

7. A method for receiving Download Control Information (DCI), applied to a mobile communication terminal, comprising: determining one, or several possible payload sizes of to-be-received DCI; determining an Aggregation Level (AL) corresponding to the possible payload size, based on a corresponding relationship between a DCI AL and a DCI payload size; and/or, determining the number of blind detections corresponding to the possible payload size, based on a corresponding relationship between the number of blind detections corresponding to the DCI AL and the DCI payload size; receiving the to-be-received DCI from a base station, based on AL and/or the number of blind detections corresponding to the possible payload size; wherein the method further comprises: receiving a Control Resource Set (CORESET) corresponding to the payload size of the to-be-received DCI from the base station, wherein the CORESET includes configuration information associated with an AL of the to-be-received DCI; wherein determining the possible payload size of the to-be-received DCI comprises: determining the possible payload size, based on the CORESET; wherein determining the AL and/or the number of blind detections corresponding to the possible payload size comprises: determining the AL and/or the number of blind detections corresponding to the possible payload size, by analyzing the CORESET.

8. The method according to claim 7 , wherein the CORESET is transmitted through high-level signaling.

9. The method according to claim 7 , wherein in the corresponding relationship, a first number is less than a second number; the first number is a sum of number of search space corresponding to all the ALs of a greater one between a first payload size and a second payload size, and the second number is a sum of number of search space corresponding to all the ALs of a smaller one between the first payload size and the second payload size.

10. The method according to claim 9 , wherein in the corresponding relationship, the same AL corresponds to the same number of Candidates, a first AL is greater than a second AL; the first AL is the maximum AL among all the ALs corresponding to the greater one between the first payload size and the second payload size, and the second AL is the maximum AL among all the ALs corresponding to the smaller one between the first payload size and the second payload size.

11. The method according to claim 10 , wherein in the corresponding relationship, a third AL is greater than a fourth AL; the third AL is the minimum AL among all the ALs corresponding to the greater one between the first payload size and the second payload size, and the fourth AL is the minimum AL among all the ALs corresponding to the smaller one between the first payload size and the second payload size.

12. The method according to claim 9 , wherein in the corresponding relationship, corresponding to the same AL, the number of Candidates corresponding to the greater one between the first payload size and the second payload size is less than, or equal to the number of Candidates, which corresponds to the smaller one between the first payload size and the second payload size; and there is at least one AL, corresponding to the at least one AL, the number of Candidates corresponding to the greater one between the first payload size and the second payload size is less than the number of Candidates, which corresponds to the smaller one between the first payload size and the second payload size.

13. A mobile communication terminal, comprising a memory, a processor, and a computer program stored in the memory, which is executable by the processor, wherein when executing the program, the processor is caused to perform: determining one, or several possible payload sizes of to-be-received DCI; determining an Aggregation Level (AL) corresponding to the possible payload size, based on a corresponding relationship between a DCI AL and a DCI payload size; and/or, determining the number of blind detections corresponding to the possible payload size, based on a corresponding relationship between the number of blind detections corresponding to the DCI AL and the DCI payload size; receiving the to-be-received DCI from a base station, based on AL and/or the number of blind detections corresponding to the possible payload size; wherein the processor is further configured to perform: receiving a Control Resource Set (CORESET) corresponding to the payload size of the to-be-received DCI from the base station, wherein the CORESET includes configuration information associated with an AL of the to-be-received DCI; wherein determining the possible payload size of the to-be-received DCI comprises: determining the possible payload size, based on the CORESET; wherein determining the AL and/or the number of blind detections corresponding to the possible payload size comprises: determining the AL and/or the number of blind detections corresponding to the possible payload size, by analyzing the CORESET.

14. The mobile communication terminal according to claim 13 , wherein the CORESET is transmitted through high-level signaling.

15. The mobile communication terminal according to claim 13 , wherein in the corresponding relationship, a first number is less than a second number; the first number is a sum of number of search space corresponding to all the ALs of a greater one between a first payload size and a second payload size, and the second number is a sum of number of search space corresponding to all the ALs of a smaller one between the first payload size and the second payload size.

16. The mobile communication terminal according to claim 15 , wherein in the corresponding relationship, the same AL corresponds to the same number of Candidates, a first AL is greater than a second AL; the first AL is the maximum AL among all the ALs corresponding to the greater one between the first payload size and the second payload size, and the second AL is the maximum AL among all the ALs corresponding to the smaller one between the first payload size and the second payload size.

17. The mobile communication terminal according to claim 16 , wherein in the corresponding relationship, a third AL is greater than a fourth AL; the third AL is the minimum AL among all the ALs corresponding to the greater one between the first payload size and the second payload size, and the fourth AL is the minimum AL among all the ALs corresponding to the smaller one between the first payload size and the second payload size.

18. The mobile communication terminal according to claim 15 , wherein in the corresponding relationship, corresponding to the same AL, the number of Candidates corresponding to the greater one between the first payload size and the second payload size is less than, or equal to the number of Candidates, which corresponds to the smaller one between the first payload size and the second payload size; and there is at least one AL, corresponding to the at least one AL, the number of Candidates corresponding to the greater one between the first payload size and the second payload size is less than the number of Candidates, which corresponds to the smaller one between the first payload size and the second payload size.